<?php
$str='the text after "?>" in the file';
var_dump(base64_decode(strtr($str,'OYPdD4VSKBwnIh7b3RFx5j+urmtfseal/0Cz9UAGLHEJypNgivoQM6XcZW8Tk2q1=','ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/')));
?>

After you read that, look for an equals sign in the text ("QOH7i==PAUAKP" for this file). Delete the contents from the beginning of the text to the end of the equals sign ("PAUAKP" will be the new beginning for this file). Run the code again with the new text and read the output. Delete up to the next equals sign if there is one.

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CUT RIGHT 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